Problems from Spotify Challenge 2011

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
All Just A Dream	1982	448	23%	0.05	319	225	71%	6.3
Cat Coat Colors	183	82	45%	0.00	78	69	88%	3.6
Imperial Measurement	1781	791	44%	0.00	716	663	93%	2.0
Peer Streaming	42	14	33%	0.04	15	10	67%	7.6
Playlist	343	48	14%	1.09	32	15	47%	9.1
Primary Register	1160	722	62%	0.00	640	596	93%	2.1
Square Pie	386	150	39%	0.07	39	30	77%	6.0
Wheel Game	119	15	13%	0.00	16	13	81%	6.5